[MD settings] move cookie tree management to cookie tree behavior

chrome/browser/resources/settings/site_settings/cookie_info.js

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+/**
+ * @typedef {{hasChildren: boolean,
+ *            id: string,
+ *            title: string,
+ *            totalUsage: string,
+ *            type: string}}
+ */
+var CookieDetails;
+
+/**
+ * @typedef {{content: string,
+ *            label: string}}
+ */
+var CookieDataForDisplay;
+
 // This structure maps the various cookie type names from C++ (hence the
 // underscores) to arrays of the different types of data each has, along with
 // the i18n name for the description of that data type.
 // This structure serves three purposes:
 // 1) to list what subset of the cookie data we want to show in the UI.
 // 2) What order to show it in.
 // 3) What user friendly label to prefix the data with.
 /** @const */ var cookieInfo = {
   'cookie': [['name', 'cookieName'],
              ['content', 'cookieContent'],
@@ skipping 27 matching lines @@
                      ['size', 'serviceWorkerSize'],
                      ['scopes', 'serviceWorkerScopes']],
   'cache_storage': [['origin', 'cacheStorageOrigin'],
                     ['size', 'cacheStorageSize'],
                     ['modified', 'cacheStorageLastModified']],
   'flash_lso': [['domain', 'cookieDomain']],
   'media_license': [['origin', 'mediaLicenseOrigin'],
                     ['size', 'mediaLicenseSize'],
                     ['modified', 'mediaLicenseLastModified']],
 };
+
+/**
+ * Get cookie data for a given HTML node.
+ * @param {CookieDetails} data The contents of the cookie.
+ * @return {!Array<CookieDataForDisplay>}
+ */
+var getCookieData = function(data) {
+  /** @type {!Array<CookieDataForDisplay>} */
+  var out = [];
+  var fields = cookieInfo[data.type];
+  for (var field of fields) {
+    // Iterate through the keys found in |cookieInfo| for the given |type|
+    // and see if those keys are present in the data. If so, display them
+    // (in the order determined by |cookieInfo|).
+    var key = field[0];
+    if (data[key].length > 0) {
+      var entry = /** @type {CookieDataForDisplay} */({
+        label: loadTimeData.getString(field[1]),
+        content: data[key],
+      });
+      out.push(entry);
+    }
+  }
+  return out;
+};